Index › PlacesPlace · 21.6°S, 165.2°E (far side)Paracelsus C crater (Moon)⧉ Copy link❝ Cite○ PinFar-side crater where Carlotto et al. and Max describe right-angled walls and towers.ConnectedSagan 1963: 'Direct contact among galactic civilizations by relativistic interstellar spaceflight' document